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A036973
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(7*n^3+4*n^2+4*n)*binomial(2*n,n)/30.
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0
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0, 1, 16, 158, 1232, 8358, 51744, 300300, 1661088, 8853702, 45819488, 231499268, 1146562144, 5584082140, 26808586560, 127118807640, 596271746880, 2770379517510, 12763270285920, 58358565060180, 265032926077920, 1196278125942900
(list; graph; refs; listen; history; internal format)
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